TiAl金属间化合物在水溶液和甲醇溶液中的应力腐蚀

STRESS CORROSION CRACKING OF TITANIUM ALUMINIDE ALLOYS IN AQUEOUS SOLUTION AND METHANOL

ＴｉＡｌ金属间化合物在水溶液和甲醇溶液中的应力腐蚀张跃，王燕斌，褚武扬，肖纪美（北京科技大学）Ｔｉ３Ａｌ基金属间化合物已用于制作新一代宇航飞机的发动机和受力件［１］，而ＴｉＡｌ则是下一代发动机的候选材料［２］．由于构件在装配、储运过程中有可能和水及有...

Abstract The stress corrosion cracking (SCC) of titanium aluminides in aqueous and methanol solutions was investigated. It was first found that for titanium aluminides SCC could occur in these media. The normalized threshold stress intensity of SCC was KISCC/KIC<0.8, da/dt=(101-4-10-3) mm/hr. The difference in fractograph between SCC and overloaded fracture in air was not evident.